"In a Banking Customer System customers can update their bank account secret pin number. Once the pin is changed, the system notifies this to the Bank Manager and the customer. The customer can also change two types of addresses if they want to during the updating of their pin: either change home address, or change work address. The system then automatically notifies to the Bank Manager and the customer once any of these two address changes is made." Draw a use case diagram to capture optimally the above scenario.